diff --git a/src/async_test_web/app.js b/src/async_test_web/app.js
new file mode 100644
index 0000000..cfc38fc
--- /dev/null
+++ b/src/async_test_web/app.js
@@ -0,0 +1,14 @@
+function loadData() {
+    document.getElementById("test").innerHTML = "Please wait...";
+    var xhttp = new XMLHttpRequest();
+    xhttp.open("GET", "data/monkeys", true);
+    xhttp.onprogress = function () {
+        document.getElementById("test").innerHTML = "<i>" + xhttp.responseText + "</i>";
+    };
+    xhttp.onreadystatechange = function () {
+        if (xhttp.readyState == 4 && xhttp.status == 200) {
+            document.getElementById("test").innerHTML = xhttp.responseText;
+        }
+    };
+    xhttp.send();
+}
diff --git a/src/async_test_web/index.html b/src/async_test_web/index.html
new file mode 100644
index 0000000..5b60262
--- /dev/null
+++ b/src/async_test_web/index.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Hello, world</title>
+    <script src='app.js'></script>
+  </head>
+  <body>
+  <h1>Async test...</h1>
+  <button type="button" onclick="loadData()">Request data</button>
+  <div id="test"></div>
+  </body>
+</html>